DK403485A - PROCEDURE FOR MANUFACTURING S-SUBSTITUTED ISOTHIOUR INGREDIENTS - Google Patents
PROCEDURE FOR MANUFACTURING S-SUBSTITUTED ISOTHIOUR INGREDIENTS Download PDFInfo
- Publication number
- DK403485A DK403485A DK403485A DK403485A DK403485A DK 403485 A DK403485 A DK 403485A DK 403485 A DK403485 A DK 403485A DK 403485 A DK403485 A DK 403485A DK 403485 A DK403485 A DK 403485A
- Authority
- DK
- Denmark
- Prior art keywords
- image
- substituted
- reacting
- preparing
- formula
- Prior art date
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Abstract
Process for preparing an S-substituted isothiourea having the functional group <IMAGE> in which R<1> represents an optionally substituted alkyl, alkenyl, aryl or aralkyl group, by reacting a thiourea containing the functional group <IMAGE> with an α-activated etherifying agent of the formula X-A-Y, where X represents a halogen atom, A is a direct linkage or CH2, and Y is an electron-withdrawing group, to give a thioether <IMAGE> and reacting the ether, in a second step, with a compound of the formula R<1>SH. The process is particularly well suited to preparing the known herbicide <IMAGE> from the corresponding thiourea by, in the first step, using chloroacetic acid to form the S- carboxymethylisourea, which is then subjected to an exchange reaction with ethanethiol. This thereby results in a higher total yield and/or a higher economic advantage as compared with known processes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK403485A DK157366C (en) | 1985-09-04 | 1985-09-04 | METHOD FOR PREPARING 4-AMINO-6-T.BUTYL-3-ETHYLTHIO-1,2,4-TRIAZIN-5-ON |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK403485A DK157366C (en) | 1985-09-04 | 1985-09-04 | METHOD FOR PREPARING 4-AMINO-6-T.BUTYL-3-ETHYLTHIO-1,2,4-TRIAZIN-5-ON |
DK403485 | 1985-09-04 |
Publications (4)
Publication Number | Publication Date |
---|---|
DK403485D0 DK403485D0 (en) | 1985-09-04 |
DK403485A true DK403485A (en) | 1987-03-05 |
DK157366B DK157366B (en) | 1989-12-27 |
DK157366C DK157366C (en) | 1990-05-21 |
Family
ID=8129498
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK403485A DK157366C (en) | 1985-09-04 | 1985-09-04 | METHOD FOR PREPARING 4-AMINO-6-T.BUTYL-3-ETHYLTHIO-1,2,4-TRIAZIN-5-ON |
Country Status (1)
Country | Link |
---|---|
DK (1) | DK157366C (en) |
-
1985
- 1985-09-04 DK DK403485A patent/DK157366C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DK157366C (en) | 1990-05-21 |
DK157366B (en) | 1989-12-27 |
DK403485D0 (en) | 1985-09-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PBP | Patent lapsed |